'Flashboard' definitions:
Definition of 'flashboard'
(from WordNet)
noun
Boarding place along the top of a dam to increase its height [syn: flashboard, flashboarding]
Definition of 'Flashboard'
From: GCIDE
- Flashboard \Flash"board`\, n. A board placed temporarily upon a milldam, to raise the water in the pond above its usual level; a flushboard. [U.S.] [1913 Webster]